Thank you again @Arkiras ,
Certainly, most of time was consumed by Non-nanite.
I have now enabled nanite for all SMs. Better performance (still worse than mixed with RT), but shadows are still so poor. Even if I disable Virtual shadowmaps:
With virtual shadowmaps:
Without (didn’t update the GPU profiler):
With RT shadows (didn’t update the GPU profiler):
So, could I conclude this?: If I (and all of us, because if it fails in a certain scenario, it can fail in anyone) want to use RT, I can’t, because RT reflections are broken (What's this trail around objects? - #2 by Miguel1900), but can’t use Lumen too, because of poor lighting on Nanite and Non-nanite meshes. I could use a mix, using RT shadows with Lumen poor reflections, but forced to not use Nanite… so there is not a complete solution, it seems; at least UE4 was already offering it (full Ray Tracing), right? Or am I missing something?
Thanks!